她坚信阶级制度恒定不变。

She believed in the fixity of the class system.

《柯林斯英汉双解大词典》

就假定保持a恒定不变。

Let's say keep a constant.

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首先，a是恒定不变的。

Well, first I said a is constant.

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我们也保持a恒定不变。

Now, we know that also we are keeping a fixed.

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在稳定流动中，质量通量是恒定不变的。

In steady flow mass flux is constant.

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电极间的压力可调并恒定不变。

Electrode force is adjustable and can be kept constantly.

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容器中的压力保持恒定不变。

Pressure in the container remains constant.

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在稳定流动中，质量通量是恒定不变的。

In steady flow, mass flux is constant.

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同时，当冲击速度恒定不变时，我们也观察到了相同的失效模式。

Meanwhile, the same failure modes are found with the constant impact velocity.

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绝不是一个恒定不变的概念，而是一个变动着的历史性概念。

They are not an unchangeable concept but a moveable one with history.

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绝不是一个恒定不变的概念，而是一个变动着的历史性概念。

They are not an unchangeable concept but a moveable one with history.

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